Dresser for band-saws.



F. P. SMITH.

DRESSER FOR BAND SAWS.

APPLIOATION FILED rmx. 21, 1911,

1,002,769. fatented Sept. 5, 1911.

2 SHEETS-SHEET 1.

iimlm J INYENTUR 2y y wmvessfs 29 W T155 l Tis-F-fmlfmfff e CULUMIIA PLANOBIAI to.. WASHINGTON. D. C.

i of Baypoint, in and State of California,

FRANK PBH-'LUS SMITH, 0F BAYPOINT, CALIFQBNIA.

nnnssnii Foir- Eaiinsaws. j

To all whom it may concern.'

Be it known that 1', Finanz linianrral a citizen of Canadznand a resident the county of- Contra Costa have invented a new and Im roved Dresser lfor Band-Saws, of which tie following 'ia a lull, clear, and exact descri tion.

Among t e principal objects which the present-,invention has in view are: To .rovide an attachment to the usual grin ing machine, the operation of which results in removing the bur at the edge ofthe tace of the teeth, and to reduce the teeth to the Asanie spread; to provide incans'for dressing the sides of the teeth subsequent to grinding, and to accomplish the same automatically,

SMITH,

and to shape the-sides of the teeth to conf' forni with .the set thercot'and to provide means 4:for regulating the pitch andspread -of the grinding members.

One embodiment .of the presenti invention l is disclosed in the. structure illustrated in Fig. 7 is the accompanying characters of reference parts in all the views, and 1n whieh- A Figure 1 is a side viewof a dresser constructed and arranged in accordance with' the present invention, the 'dotted lines in said ligure indicatin the teeth u't the saw passin Athrough the esser; Fig.'2 is'a top view o the same; Fig. 3 is an end view of the same; Fi 4 is a vertical cross section taken on the Igino 4.--4 in Fig. 1;' Fig. 5' Ls a .35 longitudinal vertical section taken on the median line of the dresscr;FiF. 6 is a plan vie'w from beneath, showing t ie underside of the top oi the dresser frame and the wedges for spreadin the dresser members;

a ongitu mal horizontal section ltaken on the line 7--7 in Fi 5; and Fi?. 8 ine 4 is a vertical cross section ta ren on the 60 to form slots 18 in which slide e elet bolts 19. edwheel 35 is manipulated to open the plates setting u 8--8 in Fig. 2. The dresser, drawings,

as. shown in the accompanv.- in

a thread The bolts 19 are provided-wi When the end 20 and a clamping nut 21.

bolts 19 have been moved length slots 18 the are held in fixed pgsition by e nuts 21 and by turning up the wing bots Specification of Letters Patent. Application Bled February 27, 1911. Serial No. 611,185.

.wed es- 2T.

drawings, Vin which like' denote corresponding 4recessed a r Vthe said screw 33. The sides 15, 15 are provided with vertical slots 34: to forni guideefV f itched 85 a has, a structural frame, i'e si es 15, 15' and the top 16 whereofare arwise or the 22. The wing bolts 22 extend Patented sept. 5, .1911.

between the bifurcated ends of tliebar 17, which form the slots 18, said bolts being thread enga V d with one side of the bifurcated .en s and loosely engaged with the other. The action Vof the b5lts22 is to clamp' the bolts 19 in fixed position. The

bolts 19 are provided with eyelet bosses 23 to receive the screw threaded portions' 2 4 of.

a. feed rod 25. The pitch of the two sections 24 is opposite,to move the bolts-19, 19 at the oppositel ends of the bar 17 in opposite directions when the rod '25 is rotated by manipulatin the handle, 26. The rod 25 is thus rotate' to converge and separate the The wedges 2T are mounted gigi Iy4 upon the bolts 19, 19, brackets 28 ein ed. to extend between the tiles 29.I The rovi Agies 29 are clamped by means ofl side'strips 3.0 upon back plates 31. The strips 30 are held in position by means of screws 32.. The

plates 31 are perforated and tapped to 're-V double pitched screw 33. The files,

ceive as shown'iest in Fig. 5 of the drawings, are jacent their upper edge to straddle for the said screw. The double screw 3.3 isprovided with a. handw cel35.

dprovided therefor. Thcwedges 27 are By manipulating the screw 83th@ plates 31 are drawn toward each other moving in closerrelation the [iles 29. In thisI manner the files are jammed a'raust the sides of "the saw A. which is bein sharpened. Theplates 31 'aire provided wit i screw bolts '36,1one at each end, extended through elongated eyelet-s 37 and provided with nuts 38 above the bar 17. By setting up the nuts 38 the plates 31 and les 29 carried thereon are raised above the guide bar B to which the dresser is bolted by means of. bolts 39. 'The said springs 40 are held in position on lthe top 16 by means of screws 41.

The .operation of a and arranged as herein shown and described is as fol1ows:'The saw A having been adjusted to the glimmer or grinder and to the guide plate B, the dresser is placed above the same. In thus placing the dresser the 31 and tiles 29 until thesame pass the set of the saw. The side 15 of the frame having the perforations 42 is then adjusted to regisdresser constructed .plates are lowered by leaf springs 40.' The tor with perforatons provided in the frame of the grinder to receive `the bolts 39. The

' bear hard aga-inst the side thereof. Prior to claim as new and desire to secure by A Patent 1s:-Y 1. A dresser for band saws, Acomprising a Copies 'of this 'patent closing the plates -81 and iles 29 carried thereby in the manner stated, the-'handle 26 is mani ulated to -adjust the wedges 21.

The we( ges 27 benginterposed between the plates 31 at the uplper section thereof rock the lon-'er ends of t e plates 31 and files earried thereby to form, as shown in Fig. lof the drawinrs, a downwardly. converged or upwardly ilred'channel for the passage of the teeth of the saw. Thisflared surface accommodates the setof the teeth as formed by the grunmer. v l

H a-ving setl the dresser the sharpening of the saw proceeds, no further attentionv bemgrequired for the dresser. lVhen the treatment of the saw is complete the dresser is removed to )ermit the removal of the saw.v-

Having t ms described myinvention, what-I Letters -on opposite may bei' obtained for ive cents Washingt dnb e pitched screw operatively engaging.

said wedge members, the mauipulatlon whereof inserts or reti-acts said wedge mernbers bet-Ween said plates.

2. A dresser for band pair saws, comprising a sides of a saw; retractable clamping means for forcin 'said plates againstsaidsaw; wedge mem ers in'sertible between said plates atthe upper end thereof; .a double pitched screw operatively engagmg said wedge members, the manipulation whereof inserts or ret-rac-ts said wedge members between said plates; and means of file plates adapted for adjustment for loc-kino said screwxand saidn-'edge members in a fasted posit-ion.

In testimony whereof- I have slgned my name to this-specification int-he presence uf two subscribinf1r Witnesses.

FRNK PHILLIPS SMITH. *.`Wit-nessest t v C. J. Smnema, H; {Emcnsom each, by' addressing the Commissioner of Patents, on,.D.' C. q 1 

